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## Homework Statement

Find a system K' in which the following events in frame K appear at the same time:

i) x

_{1}= a; t

_{1}= (2a) / c; y

_{1}= 0; z

_{1}= 0

ii) x

_{2}= 2a; t

_{2}= (3a) / (2c); y

_{2}= 0; z

_{2}= 0

Describe the motion of K'.

## Homework Equations

Lorentz transformations; time dilation; length contraction..maybe?

## The Attempt at a Solution

My scratch-work is too complicated to try and re-post here, but basically I have come to the conclusion I don't really know how to use the equations to describe the motion of K'. I need to describe the motion of K' in the direction along which the motion occurs, which is obviously the x-axis